Packing your toiletries bag for a carry-on trip for a long trip can seem daunting. How can you possibly fit everything you need in a tiny carry-on? It is possible! Smart packing requires planning and a few adjustments to your usual makeup and skincare routine. Remember, the TSA’s 3-1-1 rule requires you to fit a maximin of 3.4 ounces (or 100 milliliters) of liquids…